As previously posted by another user, Max Steiner's "King Kong" score is in fact THE ORIGINAL "Original Motion Picture Score". Max Steiner had a huge role in creating/scoring music for film, and his work has influenced & inspired many others to pick up the mantle and compose for film. The great Sir John Williams of "Star Wars"/"Close Encounters"/"Jaws"/"E.T. The Extraterrestrial" scores has often accredited Max Steiner's work as a major influence for his own work.
If you've ever watched the original "King Kong", listening to this amazingly orchestrated beautiful score with your eyes closed will induce visions of the scenes the music was composed.
Truly one of the greatest motion picture scores of all times.

Many people do not realize that this score is the first written just for a movie, that followed the beats of the film with special music for only that scene that was showing at that moment. Before King Kong, films had generic music that sometimes didn't match what you were watching. A case in point was two years earlier with the release of Dracula which started during the titles with Tchaikovsky's Swan Lake theme. It simply was not appropriate. This was the start.